Summers went to lengths to pay the Social Security taxes on payments he made to even occasional babysitters from the 1980s, said Jeremy Bulow, an economics professor at Stanford, who has known Mr.

• 譬如，上世纪80年代，在支付给偶尔雇佣的保姆薪酬时，他总是想方设法缴纳相应的社会保障税。